Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!unido!tub!tubopal!opal!simon
From: simon@opal.tu-berlin.de (Simon Leinen)
Newsgroups: comp.windows.x
Subject: Re: Twm hangs doing an xhost (request for help)
Message-ID: <SIMON.90Feb23115134@dolphin.cs.tu-berlin.de>
Date: 23 Feb 90 10:51:34 GMT
References: <9751@batcomputer.tn.cornell.edu>
Sender: news@tubopal.UUCP
Distribution: comp
Organization: TU Berlin, Fachbereich 20 (Informatik)
Lines: 25
In-reply-to: gdykes@batcomputer.tn.cornell.edu's message of 19 Feb 90 17:28:17 GMT
To:

In article <9751@batcomputer.tn.cornell.edu> gdykes@batcomputer.tn.cornell.edu (Gene Dykes) writes:

   When running twm, if I click on a menu entry with the following binding:

	   f.exec "xhost hostname"

   twm just hangs, and I have to kill it off (with great difficulty).

I had this problem too, and found two solutions for it.  You can
simply start xhost in the background, by saying

	f.exec "xhost hostname" &

od you can add a line

	NoGrabServer

to the .twmrc file.  I think the problem is that xhost will try to
make a connection to the X server, but the server is grabbed by twm
while the menu is posted.  The menu will not be removed until xhost
has returned, so this is a very beautiful case of deadlock.

You can also do both of the above, which is what I do.
-- 
Simon Leinen.